ASTM A312/A312M-14b

Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes (Includes all amendments And changes 3/25/2015).

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Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

STANDARD published on 1.11.2014

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The information about the standard:

Designation standards: ASTM A312/A312M-14b
Note: WITHDRAWN
Publication date standards: 1.11.2014
SKU: NS-1997
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Annotation of standard text ASTM A312/A312M-14b :

Keywords:

austenitic stainless steel, seamless steel pipe, stainless steel pipe, steel pipe, welded steel pipe, ICS Number Code 23.040.10 (Iron and steel pipes)

Additional information

1. Scope

1.1 This specification2 covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service.

Note 1: When the impact test criterion for a low-temperature service would be 15 ft·lbf [20 J] energy absorption or 15 mils [0.38 mm] lateral expansion, some of the austenitic stainless steel grades covered by this specification are accepted by certain pressure vessel or piping codes without the necessity of making the actual test. For example, Grades TP304, TP304L, and TP347 are accepted by the ASME Pressure Vessel Code, Section VIII Division 1, and by the Chemical Plant and Refinery Piping Code, ANSI B31.3, for service at temperatures as low as −425 °F [−250 °C] without qualification by impact tests. Other AISI stainless steel grades are usually accepted for service temperatures as low as −325 °F [−200 °C] without impact testing. Impact testing may, under certain circumstances, be required. For example, materials with chromium or nickel content outside the AISI ranges, and for material with carbon content exceeding 0.10 %, are required to be impact tested under the rules of ASME Section VIII Division 1 when service temperatures are lower than −50 °F [−45 °C].

1.2 Grades TP304H, TP309H, TP309HCb, TP310H, TP310HCb, TP316H, TP321H, TP347H, and TP348H are modifications of Grades TP304, TP309Cb, TP309S, TP310Cb, TP310S, TP316, TP321, TP347, and TP348, and are intended for service at temperatures where creep and stress rupture properties are important.

1.3 Optional supplementary requirements are provided for pipe where a greater degree of testing is desired. These supplementary requirements call for additional tests to be made and, when desired, it is permitted to specify in the order one or more of these supplementary requirements.

1.4 Table X1.1 lists the standardized dimensions of welded and seamless stainless steel pipe as shown in ANSI B36.19. These dimensions are also applicable to heavily cold worked pipe. Pipe having other dimensions is permitted to be ordered and furnished provided such pipe complies with all other requirements of this specification.

1.5 Grades TP321 and TP321H have lower strength requirements for pipe manufactured by the seamless process in nominal wall thicknesses greater than ³/₈ in. [9.5 mm].

1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.

Note 2: The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.”

2. Referenced Documents

A262-15(2021)	Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A370-23	Standard Test Methods and Definitions for Mechanical Testing of Steel Products
A999/A999M-23	Standard Specification for General Requirements for Alloy and Stainless Steel Pipe
A941-23	Standard Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
SAE J1086
ASME Boiler and Pressure Vessel Code	: Section VIII Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://www.asme.org.
B36.19	Stainless Steel Pipe
B36.10
B1.20.1	Pipe Threads, General Purpose
E527-23	Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
A1016/A1016M-23	Standard Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
E112-13(2021)	Standard Test Methods for Determining Average Grain Size
E381-22	Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings

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